Peterborough Magistrates’ Court heard that on 14 June 2016, workers were constructing a new hospitality and seating stand at the stadium of Watford Football Club.

The concrete floor and associated formwork collapsed causing a number of workers to fall.

Most of the workers were able to cling to the structure to escape serious injury but Ashley Grealish fell approximately 11 metres down the mouth of a stairwell to the basement below sustaining multiple injuries including spinal damage, which caused permanent paralysis from the waist down.

An HSE investigation found that the company’s temporary works management system was lacking.

The contractor should have had a suitable design for the temporary works taking proper account of the vertical load and the need for horizontal stability.

There should also have been a robust system to check the temporary works were properly installed and thoroughly assessed before starting to load it with the wet concrete to form the floor slab.

ECS Groundwork Ltd of St Albans pleaded guilty to breaching CDM regulations and was fined £40,000 and ordered to pay costs of £14,505.

Speaking after the hearing, HSE inspector Rauf Ahmed said: “The injuries suffered by Mr Grealish are life changing and the incident could easily have been fatal.

“This serious incident and devastation could have been avoided if the company had planned a safe system of work to prevent the support system used to cast the concrete floor from collapsing.”